Slider



FIG. 1 is a perspective view of a slider showing new design;

FIG. 2 is a top view thereof;

FIG. 3 is a bottom view thereof;

FIG. 4 is a front view thereof, the rear view being identical; and,

FIG. 5 is a left side view thereof, the right side view being identical.

The broken lines shown represent unclaimed subject matter and form no part of the claimed design. 

CLAIM The ornamental design for a slider, as shown and described. 